Heart-Rate Monitors

Get race day ready with the RS300X. It's packed with essential running features to help you monitor your progress and maximize your training. -Helps you train at the right intensity with personal sport zones -Compatible with Polar speed and distance sensors (sold separately) -Polar Fitness test measures your aerobic fitness at rest and tells you your progress -Average and maximum heart rate of each lap -Automatic lap recording -Time and distance based interval timers -Water resistant – 50m (suitable for swimming) -Syncs to online training diary with FlowLink (sold separately)